Quick Answer
The stalker is the unnamed man who pursues Lacey in Lacey's Wardrobe, in the web series. No personal name is confirmed for him in the Steam full release.
Who is the stalker in Lacey's Wardrobe?
In the web series, he is a man who follows Lacey throughout Lacey's Wardrobe.
He intends to kidnap and kill her. His role identifies him as Lacey's pursuer, but it does not give you a personal name.
If you need to distinguish the pursuer from the protagonist, see the Lacey character page. You can also compare their roles through the Lacey's Flash Games character guide.
What is the stalker's name?
He has no confirmed personal name; in the web series, he is unnamed.
“Stalker” describes what he does. You can use that label to identify the character without treating it as his real name.
No personal name has been confirmed for the Steam game either.
Where does the stalker appear?
In the web series, he appears in the first episode, Lacey's Wardrobe.
In the Steam game, the Wardrobe route ends with him killing Lacey. See Lacey's Wardrobe endings for that route, or the Lacey's Wardrobe walkthrough for the activity itself.
FAQ
No personal name is confirmed. In the web series, the character is unnamed.
In the web series, he is a human man.
Aira Riri provides his voice in the web series.
In the web series, he appears only in Lacey's Wardrobe. In the Steam game, he appears in the Wardrobe route.